North
| Date Time | NO2 | O3 | SO2 | CO | PM10 | PM2.5 |
|---|---|---|---|---|---|---|
| 2022-01-20 19:00 | 44.3 | 81.6 | 3.9 | 362.0 | 23.3 | 14.3 |
| 2022-01-20 18:00 | 46.1 | 84.6 | 3.9 | 322.7 | 27.6 | 15.6 |
| 2022-01-20 17:00 | 54.9 | 80.1 | 4.2 | 349.0 | 27.2 | 15.6 |
| 2022-01-20 16:00 | 37.2 | 102.5 | 4.2 | 278.6 | 24.3 | 16.1 |
| 2022-01-20 15:00 | 32.2 | 101.8 | 3.9 | 260.3 | 19.8 | 13.3 |
| 2022-01-20 14:00 | 34.1 | 96.6 | 3.8 | 277.6 | 20.9 | 10.9 |
| 2022-01-20 13:00 | 27.1 | 94.1 | 4.1 | 294.4 | 26.5 | 16.4 |
| 2022-01-20 12:00 | 36.8 | 72.1 | 4.3 | 352.1 | 27.0 | 18.1 |
| 2022-01-20 11:00 | 39.7 | 43.5 | 4.5 | 416.7 | 25.1 | 15.9 |
| 2022-01-20 10:00 | 36.1 | 32.2 | 4.1 | 428.4 | 26.3 | 16.5 |
| 2022-01-20 09:00 | 52.0 | 10.8 | 5.4 | 561.8 | 24.5 | 16.6 |
| 2022-01-20 08:00 | 62.5 | 3.7 | 8.2 | 908.2 | 21.2 | 14.4 |
| 2022-01-20 07:00 | 48.5 | 3.1 | 5.9 | 805.3 | 16.4 | 11.5 |
| 2022-01-20 06:00 | 40.7 | 5.0 | 3.9 | 664.0 | 15.8 | 11.6 |
| 2022-01-20 05:00 | 35.7 | 7.5 | 3.2 | 448.4 | 19.3 | 15.1 |
| 2022-01-20 04:00 | 33.4 | 10.7 | 2.7 | 453.7 | 19.1 | 14.7 |
| 2022-01-20 03:00 | 34.1 | 9.6 | 2.7 | 520.9 | 21.4 | 13.7 |
| 2022-01-20 02:00 | 42.1 | 11.0 | 3.0 | 512.2 | 22.9 | 13.5 |
| 2022-01-20 01:00 | 53.6 | 8.3 | 3.2 | 622.7 | 26.5 | 16.0 |
| 2022-01-20 00:00 | 59.4 | 6.6 | 3.6 | 624.6 | 34.0 | 21.3 |
| 2022-01-19 23:00 | 64.5 | 6.0 | 3.4 | 758.0 | 41.8 | 26.8 |
| 2022-01-19 22:00 | 85.0 | 7.2 | 3.8 | 805.2 | 50.1 | 33.3 |
| 2022-01-19 21:00 | 85.5 | 12.4 | 3.6 | 727.1 | 44.9 | 26.4 |
| 2022-01-19 20:00 | 92.3 | 26.2 | 3.3 | 772.6 | 38.4 | 16.1 |
Remarks:
(1) Time shown is in Hong Kong time.
(2) NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates
(3) Concentration shown is in µg/m3.
(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.
